1 2 3 4 6 5 D D R1 3k3 TEST_A D2 1N4001 4 +3V D3 1N4001 3 C2 IC1B R4 1 C1 100 2 6 7 4k7 10n LM324N 5 11 R3 10k 4k7 R6 1M D4 150 1N4001 LM324N D1 1N4001 GND R2 1N4001 R8 10 R9 10 R10B 10 3k3 R11 10k GND R12 680 R13 GND R18 R14 5k6 GND R16 10k 5k6 R15 GND 1k IC1D GND 5k6 GND 10k IC1C C +3V 10k IC2A 9 C6 100n 2 13 8 14 GND R19 R17 11 C C3 470n 630V D5 +3V R5 GND TEST_B R7 IC1A 1 10 C13 10u C8 100n GND 4 +3V +3V R21 R24 1M 9 C4 10n R25 1k 12 1N34A +3V C7 100n R29 1k2 D12 1N4001 C11 10u GND R27 6 C5 10n5 D7 14 D13 1N4001 METER_A LM324N D9 1N4001 IC2B 7k5 IC2D 13 METER_B 1k2 390 GND +3V R26 In Out ADJ 8 D6 1N34A R23 330 R22 IC3 LM317 IC2C 10 3 2 1 7k5 GND LM324N LM324N LM324N R20 C12 10u 3 12 B +3V 7 100 AC1 D11 +3V 1N4001 AC2 D8 1N4001 D10 1N4001 C9 100n C10 1000u 16V R28 1k5÷100 B LM324N LM324N GND A A Title Size ESR Meter Number Revision B Date: File: 1 2 3 4 5 1-Jun-2009 D:\melo\ESR Mero\ESR Mero.ddb Sheet of Drawn By: 6 V3